树莓派 Raspberry Pi 4B TVS 瞬态抑制二极管击穿更换求助 - V2EX
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树莓派 Raspberry Pi 4B TVS 瞬态抑制二极管击穿更换求助
ZHUJIAKAI
100 天前
via iPhone 1015 次点击
这是一个创建于 100 天前的主题,其中的信息可能已经有所发展或是发生改变。
树莓派 Raspberry Pi 4B 被我插 DC12V 电源直接冒烟了,测量发现周围电容短路,刚开始以为电源管理芯片烧了,后来拆下 TVS 二极管测量测量阻值正常了,插电指示灯闪烁正常了,于是按照 tvs 二极管的丝印型号查了一下没找到一样的,我也不知道如何更换同型号的 TVS 瞬态抑制二极管,基于 TVS 瞬态抑制二极管特性高压导通,是不是可以选择 6V 的 TVS 二极管更换即可?
https://imgur.com/a/0HIUFBG
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